Castaldo Rapido jewelry molding rubber is aVERY FAST version of our Super High Strength, Econosil and other silicone jewelry molding rubbers that can speed up your work significantly. It makes tough, strong PRODUCTION rubber molds in as little as 15 minutes. Rapido jewelry molding rubber gets your models into production FAST!

Here are some typical vulcanizing times for Rapido jewelry molding rubber -- only 1/3 the usual time!

Mold Size

Vulcanizing Times

vs. Standard Times

12mm - 1/2" mold

10 minutes

30 minutes

19mm - 3/4" mold

15 minutes

45 minutes

25mm - 1" mold

20 minutes

60 minutes

Castaldo Rapido is a soft clay or putty-like material that is easy to work with, just like our Castaldo Super High Strength , Econosil and other silicone jewelry molding rubber compounds. Castaldo Rapido produces highly detailed wax injections with an extraordinarily shiny surface that requires less finishing. Waxes are self releasing and need no release spray or messy powder. Molds are easy to pack and cut like butter. Rubber shrinkage is only 0.1%.

All of the tools and techniques for using Rapido are exactly the same as those used with our Super High Strength, Econosil and other silicone molding rubbers. There’s nothing new to learn and there are no procedures to change.